Difference between revisions of "Solar cell"
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== MPPT relation == | == MPPT relation == | ||
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| + | The second lecture: [https://www.youtube.com/watch?v=M90Wxl9uAXY ] teaches the mechanisms behind the MPPT relation. | ||
== Energy Harvesting Chips == | == Energy Harvesting Chips == | ||
Revision as of 09:55, 30 April 2015
This page is under construction!!!
Intro
A solar cell is a complex device with many details under the hood. Studying a solar cell, optimizing the efficiency is high tech.
Deep Basics
The energy emerging from a solar cell is an effect which can be described with quantum mechanics. This means that it is complicated!
There is a very good lecture course online: [1]
Important figures and ideas which can be discovered in this course are:
The integrated power delivered on the surface of the Earth is 100 mW/cm2
But only wavelength shorter than 1.1Ev are absorbed: so this means only 44 mW/cm2 is possible at best. Why not "all" energy can be used is a quantum effect: this has to do with discontinuity in absorbing energy. Electrons, which catch the energy or send it out again do this in "jumps", not in a nice variable way.
Irradiance
MPPT relation
The second lecture: [2] teaches the mechanisms behind the MPPT relation.